Combined auto jack and safety device



W. SCOTT.

COMINED AUTO JACK AND SAFETY DEVICE. APPLICATION FILED ocT. 5.1920.

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ATTORNEY w. SCOTT.

l COMBINED AUTO JACK AND SAFETY DEVICE. APPLICATION FILED ocT. 5. 1920.`

1 ,397 18.5 Patented Nov. 15, 1921.

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- ATTORNEY wITNEssf W. SCOTT.

COMBINED AUTO .IACK AND SAFETY DEVICE.

APPLICATION FILED OCT. 5, 1920.

Patented Nov. 15, 1921.

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vCOMBINED AUTO JACK 'AND SAFETY DEVICE.

Z y APPLICATION FILED OCT. 5. 1920- Y 1,397, 185. Patented Nov. 15,1921.

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YI 5 n I l Q ATTORNEY narran sraras! WILLAM SCGTT, OF ST. LOUIS, IMIISSOUREL.

COMBINED AUTO .TACK AND SAFETY DEVICE.

Specification of Letters Patent.

llatfented Nov. 15, 1921.

Application filed October, 1920. Serial No. 414,894.

To all fr0/tom it may concern Be it known that l, XVILLIAM Sooi'T, a citizen of the United States, residing at St. Louis, in the county of St. Louis city and State of Missouri, haveinvented new and useful Improvements in Combined Auto Jacks and Safety-Brakes, of which the following is a specification.

This invention relates to a combined automobile jack and safety brake, the principal object of the invention being to provide a jack for each wheel of the vehicle with means for actuating all the jacks simultaneously from the motor.

Another object of the invention is to provide means for operating each jack individually by hand.

A further object of the invention is to provide adruin carrying shaft for each jack with means for rotating the shaft from the motor or by hand by ratchet mechanism so arranged that the shaft may be rotated by hand or by the motor without interference of one means by the other.

ln describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a plan view showing the invention applied to the chassis of an automobile. Fig. 2 is a section on line 2-2vof Fig. 1.

Figs. 3, 4 and 5 are detail views showing the means for driving the drum, which is connected with the jack raising shafts, from the drive shaft of the automobile.

Fig.'6 is a section on line 6 6 of Fig. 1.

Fig. 7 is a section on line 77 of Fig. 6.

Fig. 8 is a section on line 8 8 of Fig. l.

Fig. 9 is an elevation yshowing theme-ans for yieldingly supporting the brake shoe.

Fig. 10 is a section on line 1(7)-410 of Fig. 9.

Fig. 11 is aside view ofthe hand lever and its associated `parts for actuating the jack raising shafts by hand.

Fig. 12 is a front view of Fig. 11.

Fig. 13 is a view of the hand lever looking toward the side opposite from that of Fig. l1.

Fig. 14C is a detail viewof the shoe.

In these yviews 1 indicates the frame of the automobile, 2 the rear axle, 3 the front axle and 4l the front and rear wheels. 5 indicates the jack or drive shaft or" the automo-` bile.

`which is connected with the lower ends of lncarrying out my invention I clamp a pair of jacks A on each axle, adjacent the wheels. Each jack consists of a pair of-uprights G slidably supported in the clamp 7, which is bolted to the axle, and a shoe 8 part of the clamp and tend to hold the jack in raised position.

In order to resist the horizontal movement ofthe shoe l connect each end thereof with a bracket 13, secured to the frame, by means of the 'spring carrying members 14.' These springy carrying members are composed of the headed rod 15 which is pivoted tothe bracket 13 and has openingsin its head to receive the limbs of the yoke part 1G which is pivoted to the shoe. The outer end of the yoke part is bent at right-angles to embrace the rod l5 and a spring 17 is placed on said rod 15 and engages the head of said rod and the bent part of 'the yoke. These spring members will resist horizontal movement of the shoe and tend to hold the same in a central position relative to the uprights, as

shown in Fig. 9.

v `A shaft 18 is `rotatably supported on the 'frame of the automobile adjacent each wheel by means of the brackets y19 secured to the frame. The outer end of this shaft is located above the jack and its inner end is arranged substantially mid-way the ends of the automobile frame. A drum 20 is secured to the outer end of each shaft and this drum is connected with the jack by means or' the cable Q2. rFhis cable has its end connected with the cross piece 11 and passes around a pulley 23 carried by the clamp 7 of the jack.

Each shaft 1S carries a pair of Vpulleys 24 and 24, each pulley being rotatably mounted onthe shaft and formed of two portions which are bolted together as shown inFig.

7. The inner faces of the two portions are hollowed out to form a chamber 25 in which is located a ratchet wheel 26 `which is keyed to theshaft. rlhe pulley carries a vdog 27 which is forced into engagement with the ratchet wheel by a spring 28. This dog has a part projecting into the groove of the pulley so that it will be engaged. by the cable 29 or 29', which connects the pulley with the actuating mechanism'. lllhen the dog is engaged by the cable it will be pressed out of engagement with the ratchet so that the shaft 18 can be rotated without moving the pulley. As soon as the dog is free from the pressure of the cable, however, the spring will forcey it into engagement with the ratchet wheel and lthus connect the pulley with the shaft so that it will rotate the shaft when it is rotated by the cable.

The pulleys 24 are connected bythe cables 29 with the pulleys 30. Each pulley 30 is provided with a pair of grooves, one of which is engaged by the cable 29 which has its end secured in said groove, and the other groove is engaged by the cable 31, which has its ends secured in said groove, and this cable is secured to the lower end of one of four levers 32 which are pivoted, intermediate theirends, on the shaft 33 and to which the hand lever 34 is pivoted. The cables 31, which areV attached to the front pair of shafts 18, pass over small pulleys 35 which are attached to a cross bar of the frame of Vthe automobile. The upper ends of the levers 32 carry spring pressed dogs 36 which engage the segmental racks 37 which hold the levers in adjusted positions with the jacks in operative position. The hand lever 34 carries four spring pressed dogs 88, the springs normally holding the dogs out of engagement with the dogs 36. Each dog 38 is connected by a rod 39 with one of four lpawls 40 which are pivotally mounted to the upper part of the hand lever 34. These parts are so arranged that when a pawl 40 is pushed inwardly by the hand grasping the hand lever the dog 38 will be depressed into engagement wit i the top of the lever 32 and this dog 38 will strike the dog 36 of said lever 32 and tilt the same out of engagement with its raclr 3 7. This action will lock the hand lever to the lever 32 so that as the hand lever is pushed forwardly the lever 32 will be carried with it and when the parts have been moved far enough to lower the jack the hand is loosened somewhat to permit the dog 38 to assume its horizontal position and thus release the dog 36 so as to permit the same to engage the rack and thus hold the lever 32 in its adjusted position. The hand lever can then be returned to its inoperative position while the lever 32 will remain in its adjusted position. 1When it is desired to raise' the jack and lower the wheel it is simply necessary to move the handle forwardly again and force the dog 38 into engagement withthe 'dog 36 to move said dog 36 out of engagement with its rack so as to permit the weight of the automobile and the springs on the jack tor return the parts to inoperative position. ln this return movement the hand lever and its pawl must be so manipulated that the pawl 36 will remain out of engage` ment with its rack.

This forward movement of the lever 32 will be communicated to the pulley 30 by means of the cable 31 and the rotation of pulley 30 will cause cable 29 to rotate pulley The initial movement of this pulley 25 will cause the pressure of the cable 29 to be removed from the dog 2? so as to permit the dog to engage the ratchet 26.v Then the further rotation of the pulley 25 by its cable 29 will cause the rotation of shaft 18 and its drum 2,0 and the rotation of said drum 2O will wind up the cal le 22 and thus force the jack downwardly into engagement with the ground and so lift the wheel of the vehicle oil the ground. lt will be seen that the rotation of the shaft 1S can take place without interference on the part of the pulley 24 as this pulley 24 will simply remain stationary and permit the shaft and the ratchet wheel within said pulley to rotate as the dog will be held out of engagement with the ratchet by the cable 29.

lt will be seen that any desired jack may be actuated by the hand lever by pressing upon the desired pawl 40 to move the'desired lever 32 to actuate the jack connected therer with.

lf it is desired to use the jacks as a brake by forcing them into contact with the ground, though without raising1 the wheels off the ground, two of the pawls may be de pressed at the same time so as to force two of the jacks downward into engagement with the ground and thus bring the automobile to a stop by the frictional engagement of the shoes of the jacks with the road surface. This engagement of the shoes with the ground will cause them to slide horizontally but this movement will be resisted Aby the spring members 14. This yielding movement of the parts will prevent breakage caused by the too sudden engagement of the shoes with the road surface.

The four cables 29 are connected with a drum 41 which is rotatably mounted on the drive shaft 5 of the automobile. The cables 115 29, connected with the shafts on one side of the automobile, are wound in one direction on the drum while the other pair -of cables are wound in the opposite direction so that when the drum is rotated all four cables will be wound thereon so as to rotate all four shafts 18 and thus actuate all the jacks to lift all four wheels olf the ground. The cables 29 will act on the pulleys 24 as before described in connection with the pulleys 24 while said pulleys 24 will remain inactive due to their dogs being out of engagement with their ratchets. The drum 41 is normally pressed against a collar 42 by means of the coil spring 43. This drum is provided iso with a clutchy part 44 anda clutch part 45 is slidably mounted on shaft 5 but is keyed thereto.k The collars 46 limit the sliding movement of said clutch part. The two clutch parts are provided with teeth as shown. The clutch part 45 is provided with a groove to receive a ring 47, this ring being provided with studs 48 which are en-I gaged by the forked end of the pedal 49. A spring 50, connected with the pedal and a part of the frame, tends to hold the clutch part 45 in inactive position and out of engagement with the clutch `part 44 on the drum. llfhe drum carries an angular projection 51 which is provided with an inclined inner face and an angular projection 52 secured to a part of the frame is adapted to engage with the said inclined face, after the drum has made a partial revolution and thus force the drum out of engagement with the clutch part to releasey the drum fromthe drive shaft. rl`his arrangement of the parts will permit the drum to be rotated to lower i the jacks and after they have -been lowered to a sufcient degree the drum will be released from the drive shaft and thus prevent further movement of the parts. The return movement of the drum and thus the raising of the jacks is prevented by means of a catch 53 engaging anotch 54 on the drum. The catch is forced into engagement with said notch by the spring 55 and the catch is moved into releasing position by means of a foot pedal 56 which is`connected with said catch.

It will thus be seen that when the automobile is to be entirely raised from the ground the pedal 49 is pressed with the foot to move the clutch part 45 into engagement with the clutch part 44 and drum 41 so as to connect said drum with the power plant of the automobile. The drum will thus be rotated to wind up the cables 29 and thus all four jacks will be lowered. The drum will continue to rotate until the projection 51 strikes the projection 52 when the inclined face of projection 51 will cause the drum to move out of engagement with the clutch part 45 and thus come to rest. Just before the completion of this movement, however, the catch will engage the notch 54 and prevent the return movement of the drum by the weight of the vehicle and the springs on the jacks. When the automobile is to be lowered it is simply necessary to press on the pedal 56 by the foot to release the catch 53 from the drum to permit the weight of the vehicle and the springs of the jacks to raise said jacks to their inactive positions. This movement of the jacks will return the parts to their normal position.

Vhen a single wheel is to be raised this can be done by operating the hand lever as before described or this hand operated mechanism may be used for braking the automobile by moving the jacks into frictional engagement with the road surface as before described. The yielding movement of the `shoes of the jacks will prevent breakage of the parts as will be understood.

l prefer to form each shoe 8 with a sole 8 which is preferably formed of flexible material, such as rubber and to insert spikes or projections 8 in the shoe, these spikes projecting through the sole. rlhe sole isv fastened at its ends to thevshoe. The sole acts as a brake on slight pressure, and when full weight is thrown on jack the spikes will come in contact with the road surface, thus causing the machine to stop in a shorter space. The sole will prevent skidding, on slippery pavements or roads, also makes the device more rigid when standing, either in garage or roadway.

It is thought from the foregoing description that the advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the construction and in the combination and arrangement of the several palts, provided that such changes fall within the scope of the appended claims.

lVhat l claim is 1. ln combination with a motor vehicle, a jack associated with each wheel thereof, means for normally holding said jacks in raised position, a drum for each jack, a cable connecting the drum with the jack, a shaft for each drum, a pair of pulleys on each shaft, ratchet mechanism connecting each pulley with its shaft, a hand lever, means for selectively connecting said hand lever with one of the pulleys on each shaft, such means including a cable, a drum, a cable connecting the same with the other pulley on each shaft, said cables normally holding the ratchet mechanism in inoperative position and manually operated means for connecting the drum with the power plant of the automobile.

2. In combination with motor vehicle, a jack associated with each wheel thereof, a drum for each jack, a cable connecting the drum with the jack, a shaft for each drum, manually operated means connected with the shafts for rotating any desired shaft and power driven means connected with the shafts for rotating all the shafts simultaneously.A

3. ln combination with a motor vehicle, a jack associated with each wheel thereof, a drum for each jack, a cable connecting the drum with the jack, a shaft for each drum, power driven means connected with the shafts for actuating the same simultaneously, foot operated means for connecting and disconnecting the power driven means with the source of power and manually operated means for rotating the shafts one at a time.

4. ln combination with a motor vehicle,

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a jack associated with each lwheel thereof, a drum for each jack, a cable connecting the drum with the jack, a shaft for each drum, a hand lever, two pairs of levers associated therewith, pawl and ratchet mechanism 'for holding .said levers in adjusted position, means onil the hand lever for selectively loching the same to the levers and for disengagingthe dogs of said other levers from their racks and cables connecting said other levers with the shafts. y i

5. ln combination with a motor vehicle, a jack associated with each wheel thereof, a drum for each jack, a cable connecting'the drum with the jack, a shaft for each drum,

a large drum, cables connecting the same with the shafts, clutch means for connecting said large drum with' the power plant of the vehicle, manually operated means for movingthe clutch means'intc operative position and means for ,automatically moving such means into inactive position after 'the large drum has made a partial revolution,

6. In combination with a motor vehicle, a jack associated with each wheel thereof, a drum for each jack, a' cable connecting th drum with the jack, a shaft for each drum, a large drum, cables connecting the same with the shafts, clutch means for connecting said large drum with the power plantof the vehicle, manually operated means for movingk the clutch means into operative position, means for automatically moving such means into inactive position after the large drum has made a partial revolution, latch mechanism for locking the large drum in position with the jacks lowered and manually operated means for releasing the latching means.

7. In combination with a motor vehicle, a jack associated with each wheel thereof, a drum for each jack, a cable connecting the drum with' the j acl, a shaft for each drum, a pair of pulleys on each shaft, each pulley being of hollow construction and loosely mounted on the shaft, a `'ratchet wheel within each pulley and keyed tothe shaft, a dog carriedby each pulley, a spring for forcing the same in engagement with the ratchet wheel, a cable engaging each pulley and bearing against a part on the dog for holding the same out of engagement with the ratchet wheel, a set of short levers with which .the cables for one set of pulleys are connected, a hand lever,means thereon for selectively locking the same to any desired short lever, a power driven drum with which the cables of the other set of pulleys are connected and manually operated means for connecting the drum with the power plant ofthe vehicle. a

f `In testimony whereof I affix my signature.

. f VILLIAM SCOTT. 

